Project #26 – Radio Frequency – Display – Mk05

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#DonLucElectronics #DonLuc #RadioFrequency #Moteino #Send #Receive #Display #FreeIMU #Magnetometer #Accelerometer #Gyroscope #Arduino #Project #Fritzing #Programming #Electronics #Microcontrollers #Consultant

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SparkFun Micro OLED Breakout

The SparkFun Qwiic Micro OLED Breakout is a Qwiic-enabled version of our popular Micro OLED display. The small monochrome, blue-on-black OLED screen presents incredibly clear images for your viewing pleasure. It’s the OLED display is crisp, and you can fit a deceivingly large amount of graphics on there. This breakout is perfect for adding graphics to your next project and displaying diagnostic information without resorting to a serial output, all with the ease of use of our own Qwiic Connect System.

This version of the Micro OLED Breakout is exactly the size of its non-Qwiic sibling, featuring a screen that is 64 pixels wide and 48 pixels tall and measuring 0.66″ across. But it has also been equipped with two Qwiic connectors, making it ideal for I2C operations. We’ve also added two mounting holes and a convenient Qwiic cable holder incorporated into a detachable tab on the board that can be easily removed thanks to a v-scored edge.

DL2211Mk09

2 x Moteino R2 (RFM12B)
1 x SparkFun Micro OLED Breakout (Qwiic)
1 x SparkFun 9 Degrees of Freedom – Sensor Stick
2 x Lithium Ion Battery – 1 Ah
1 x SparkFun Cerberus USB Cable

Moteino R2 (Receive)

TR0 – Digital 2
LED – Digital 9
TR1 – Digital 10
TR2 – Digital 11
TR3 – Digital 12
TR4 – Digital 13
SDA – Analog A4
SCL – Analog A5
VIN – +3.3V
GND – GND

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DL2211Mk09pr.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #26 - Radio Frequency - Display - Mk05
26-05
Receive
DL2211Mk09pr.ino
2 x Moteino R2 (RFM12B)
1 x SparkFun Micro OLED Breakout (Qwiic)
1 x SparkFun 9 Degrees of Freedom - Sensor Stick
2 x Lithium Ion Battery - 1Ah
1 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// RFM12B Radio
#include <RFM12B.h>
// Two Wire Interface (TWI/I2C)
#include <Wire.h>
// SparkFun Micro OLED
#include <SFE_MicroOLED.h>

// You will need to initialize the radio by telling it what ID
// it has and what network it's on
// The NodeID takes values from 1-127, 0 is reserved for sending 
// broadcast messages (send to all nodes)
// The Network ID takes values from 0-255
// By default the SPI-SS line used is D10 on Atmega328. 
// You can change it by calling .SetCS(pin) where pin can be {8,9,10}
// Network ID used for this unit
#define NODEID        1
// The network ID we are on
#define NETWORKID    99
// Serial
#define SERIAL_BAUD  115200

// Encryption is OPTIONAL
// to enable encryption you will need to:
// - provide a 16-byte encryption KEY (same on all nodes that talk encrypted)
// - to call .Encrypt(KEY) to start encrypting
// - to stop encrypting call .Encrypt(NULL)
uint8_t KEY[] = "ABCDABCDABCDABCD";

// Need an instance of the RFM12B Radio Module
RFM12B radio;

// Process Message
// Message
String msg = "";
int firstClosingBracket = 0;
// Yaw Pitch Roll
String sYaw = "";
String sPitch = "";
String sRoll = "";
float Yaw = 0;
float Pitch = 0;
float Roll = 0;

// LED
int iLED = 9;

// SparkFun Micro OLED
#define PIN_RESET 9
#define DC_JUMPER 1
// I2C declaration
MicroOLED oled(PIN_RESET, DC_JUMPER);

// Software Version Information
String sver = "26-05";

void loop() {

  // is RFM12B Radio
  isRFM12BRadio();

  // Micro OLED
  isMicroOLED();

}

getFreeIMU.ino

// FreeIMU
// isFreeIMU
void isFreeIMU(){

  // FreeIMU
  // IMU Yaw Pitch Roll
  // msg = "<IMU|1000|1000|1000|*";
  // msg = "<IMU|" + sYaw + "|" + sPitch + "|" + sRoll + "|*"
  firstClosingBracket = 0;
  // "<IMU|"
  firstClosingBracket = msg.indexOf('|');
  msg.remove(0, 5);
  // Yaw
  firstClosingBracket = msg.indexOf('|');
  sYaw = msg;
  sYaw.remove(firstClosingBracket);
  Yaw = sYaw.toFloat();
  // Pitch
  firstClosingBracket = firstClosingBracket + 1;
  msg.remove(0, firstClosingBracket );  
  firstClosingBracket = msg.indexOf('|');
  sPitch = msg;
  sPitch.remove(firstClosingBracket);
  Pitch = sPitch.toFloat();
  // Roll
  firstClosingBracket = firstClosingBracket + 1;
  msg.remove(0, firstClosingBracket );  
  firstClosingBracket = msg.indexOf('|');
  sRoll = msg;
  sRoll.remove(firstClosingBracket);
  Roll = sRoll.toFloat();

}

getMicroOLED.ino

// SparkFun Micro OLED
// Setup Micro OLED
void isSetupMicroOLED() {

  // Initialize the OLED
  oled.begin();
  // Clear the display's internal memory
  oled.clear(ALL);
  // Display what's in the buffer (splashscreen)
  oled.display();

  // Delay 1000 ms
  delay(1000);

  // Clear the buffer.
  oled.clear(PAGE);
  
}
// Micro OLED
void isMicroOLED() {

  // Text Display FreeIMU
  // Clear the display
  oled.clear(PAGE);
  // Set cursor to top-left
  oled.setCursor(0, 0);
  // Set font to type 0
  oled.setFontType(0);
  // FreeIMU
  oled.print("FreeIMU");
  oled.setCursor(0, 12);
  // Yaw
  oled.print("Y: ");
  oled.print(Yaw);
  oled.setCursor(0, 25);
  // Pitch
  oled.print("P: ");
  oled.print(Pitch);
  oled.setCursor(0, 39);
  // Roll
  oled.print("R: ");
  oled.print(Roll);
  oled.display();

}

getRFM12BRadio.ino

// RFM12B Radio
void isSetupRFM12BRadio()
{

  // RFM12B Radio
  radio.Initialize(NODEID, RF12_433MHZ, NETWORKID);
  // Encryption
  radio.Encrypt(KEY);
  // Transmitting
  Serial.println("Listening...");
  
}
// is RFM12 BRadio
void isRFM12BRadio()
{

  // Receive
  if (radio.ReceiveComplete())
  {
    
    // CRC Pass
    if (radio.CRCPass())
    {
      
      // Serial
      Serial.print('[');
      Serial.print(radio.GetSender());
      Serial.print("] ");
      
      // Message
      msg = "";
      
      // Can also use radio.GetDataLen() if you don't like pointers
      for (byte i = 0; i < *radio.DataLen; i++)
      {
        
        Serial.print((char)radio.Data[i]);
        msg = msg + (char)radio.Data[i];
        
      }

      // Turn the LED on HIGH
      digitalWrite( iLED , HIGH);
      
      // FreeIMU
      // Yaw Pitch Roll
      isFreeIMU();
  
      // ACK Requested
      if (radio.ACKRequested())
      {
        
        // Send ACK
        radio.SendACK();
        Serial.print(" - ACK Sent");
        
      }

      // Turn the LED on LOW
      digitalWrite( iLED , LOW);
    
    }
    else
    {
      
      // BAD-CRC
      Serial.print("BAD-CRC");

    }

    // Serial
    Serial.println();

  } 
  
}

setup.ino

// Setup
void setup()
{

  // Serial
  Serial.begin(SERIAL_BAUD);

  // Give display time to power on
  delay(100);
  
  // Set up I2C bus
  Wire.begin();

  // Setup Micro OLED
  isSetupMicroOLED();

  // LED
  pinMode( iLED , OUTPUT);

  // RFM12B Radio
  isSetupRFM12BRadio();

}

——

Moteino R2 (Send)

TR0 – Digital 2
LED – Digital 9
TR1 – Digital 10
TR2 – Digital 11
TR3 – Digital 12
TR4 – Digital 13
SDA – Analog A4
SCL – Analog A5
VIN – +3.3V
GND – GND

——

DL2211Mk09ps.ino

/* ***** Don Luc Electronics © *****
Software Version Information
Project #26 - Radio Frequency - Display - Mk05
26-05
Send
DL2211Mk09ps.ino
2 x Moteino R2 (RFM12B)
1 x SparkFun Micro OLED Breakout (Qwiic)
1 x SparkFun 9 Degrees of Freedom - Sensor Stick
2 x Lithium Ion Battery - 1Ah
1 x SparkFun Cerberus USB Cable
*/

// Include the Library Code
// RFM12B Radio
#include <RFM12B.h>
// Sleep
#include <avr/sleep.h>
// Two Wire Interface (TWI/I2C)
#include <Wire.h>
// Includes and variables for IMU integration
// Accelerometer
#include <ADXL345.h>
// Magnetometer
#include <HMC58X3.h>
// MEMS Gyroscope
#include <ITG3200.h>
// Debug
#include "DebugUtils.h"
// FreeIMU
#include <CommunicationUtils.h>
#include <FreeIMU.h>

// You will need to initialize the radio by telling it what ID
// it has and what network it's on
// The NodeID takes values from 1-127, 0 is reserved for sending 
// broadcast messages (send to all nodes)
// The Network ID takes values from 0-255
// By default the SPI-SS line used is D10 on Atmega328. 
// You can change it by calling .SetCS(pin) where pin can be {8,9,10}
// Network ID used for this unit
#define NODEID        2
// The network ID we are on
#define NETWORKID    99
// The node ID we're sending to
#define GATEWAYID     1
// # of ms to wait for an ack
#define ACK_TIME     50
// Serial
#define SERIAL_BAUD  115200

// Encryption is OPTIONAL
// to enable encryption you will need to:
// - provide a 16-byte encryption KEY (same on all nodes that talk encrypted)
// - to call .Encrypt(KEY) to start encrypting
// - to stop encrypting call .Encrypt(NULL)
uint8_t KEY[] = "ABCDABCDABCDABCD";

// Wait this many ms between sending packets
int interPacketDelay = 1000;
// Input
char input = 0;

// Need an instance of the RFM12B Radio Module
RFM12B radio;
// Send Size
byte sendSize = 0;
// Payload
char payload[100];
// Request ACK
bool requestACK = false;

// LED
int iLED = 9;

// Set the FreeIMU object
FreeIMU my3IMU = FreeIMU();

// Yaw Pitch Roll
String zzzzzz = "";
String sYaw = "";
String sPitch = "";
String sRoll = "";
float ypr[3];
float Yaw = 0;
float Pitch = 0;
float Roll = 0;

// Software Version Information
String sver = "26-05";

void loop()
{

  // isFreeIMU
  isFreeIMU();

  // is RFM12B Radio
  isRFM12BRadio();

  // Inter Packet Delay
  delay(interPacketDelay);
  
}

getFreeIMU.ino

// FreeIMU
// isFreeIMU
void isFreeIMU(){

  // FreeIMU
  // Yaw Pitch Roll
  my3IMU.getYawPitchRoll(ypr);
  // Yaw
  Yaw = ypr[0];
  // Pitch
  Pitch = ypr[1];
  // Roll
  Roll = ypr[2];

}

getRFM12BRadio.ino

// RFM12B Radio
void isSetupRFM12BRadio(){

  // RFM12B Radio
  radio.Initialize(NODEID, RF12_433MHZ, NETWORKID);
  // Encryption
  radio.Encrypt(KEY);
  // Sleep right away to save power
  radio.Sleep();
  // Transmitting
  Serial.println("Transmitting...\n\n");
  
}
// is RFM12 BRadio
void isRFM12BRadio(){

  // sYaw, sPitch, sRoll ""
  sYaw = "";
  sPitch = "";
  sRoll = "";

  // sYaw, sPitch, sRoll concat
  sYaw.concat(Yaw);
  sPitch.concat(Pitch);
  sRoll.concat(Roll);

  // zzzzzz ""
  zzzzzz = "";

  // zzzzzz = "<IMU|1000|1000|1000|*";
  // zzzzzz = "<IMU|" + sYaw + "|" + sPitch + "|" + sRoll + "|*"
  zzzzzz = "<IMU|" + sYaw + "|" + sPitch + "|" + sRoll + "|*";

  // sendSize Length
  sendSize = zzzzzz.length();

  // sendSize
  payload[sendSize];

  // sendSize, charAt
  for(byte i = 0; i < sendSize+1; i++){

    payload[i] = zzzzzz.charAt(i);
    
  }
    
  // payload
  Serial.print(payload);
  
  // Request ACK
  requestACK = sendSize;
  
  // Wakeup
  radio.Wakeup();
  
  // Turn the LED on HIGH
  digitalWrite( iLED , HIGH);
  
  // Send
  radio.Send(GATEWAYID, payload, sendSize, requestACK);

  // Request ACK
  if (requestACK)
  {
    
    Serial.print(" - waiting for ACK...");
    if (waitForAck()){
      
      Serial.print("Ok!");
      
    }
    else Serial.print("nothing...");
    
  }

  // Turn the LED on LOW
  digitalWrite( iLED , LOW);

  // Sleep
  radio.Sleep();

  // Serial
  Serial.println();
  
}
// Wait a few milliseconds for proper ACK, return true if received
static bool waitForAck(){
  
  // Now
  long now = millis();

  // ACK
  while (millis() - now <= ACK_TIME){
    

    if (radio.ACKReceived(GATEWAYID)){
      
      return true;

    }

  }
  
  return false;
  
}

setup.ino

// Setup
void setup(){

  // Serial
  Serial.begin(SERIAL_BAUD);

  // LED
  pinMode( iLED , OUTPUT);

  // Set up I2C bus
  Wire.begin();

  // RFM12B Radio
  isSetupRFM12BRadio();

  // Pause
  delay(5);
  // Initialize IMU
  my3IMU.init();
  // Pause
  delay(5);

}

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People can contact us: https://www.donluc.com/?page_id=1927

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Luc Paquin – Curriculum Vitae – 2023
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